The Toro Rosso Formula One team have delayed the debut of their new car until after this weekend's Turkish Grand Prix due to a lack of spare parts.
"We haven't had enough time to produce all the spares we need," a spokeswoman said on Monday.
The Ferrari-powered team had planned to introduce the STR3 in Istanbul but French driver Sebastien Bourdais crashed it during testing in Barcelona on April 16. The debut is now likely to be in Monaco on May 25.
The team, who have been using a modified version of their 2007 car, said it had always been an ambitious target to introduced the STR3 at the race in Istanbul and Bourdais' accident had only complicated matters.
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